Flame arrestors for anaesthetic equipment



Dec. 18, 1956 M wlLES 2, 774,351

FLAME ARRESTORS FOR ANAESTHETIC EQUIPMENT Filed April 18, 1955 i i! 1* i i .32 i l r v I 1 INVENTOR. How/5e; M. w/uss x a? MM A 770 KNE V United States Patent ARRESTORS FOR ANAESTHETIC V EQUIPMENT Howard M. Wiles, Waukesha, Wis.

Application April 18, 1955, Serial No. 501,925

2 Claims. (Cl. 128-138) 7 FIAME through the equipment in the event of an explosion of anaesthetic gases used in an operation.

Other and further objects of the invention will appear as the description proceeds, reference being had to the accompanying drawing, in which:

Fig. l is a view in perspective of a flame arrester included in a line for administering anaesthetic gas.

Fig. 2 is a vertical sectional view of the device.

Fig. 3 is a view taken on line 33 of Fig. 2.

Fig. 4 is a view taken on line 4-4 of Fig. 2.

Fig. 5 is a plan view of one of the plates employed in the assembly. 7

Fig. 6 is a similar view of an alternate plate.

Referring more particularly to the drawings, the numeral 10 refers to the device generally, including a tubular shell 11 and a pair of coupling elements 12 and 13. A pair of 0 rings fix the coupling elements within the ends of the tubular shell 11. A bolt 14 is threadingly secured to element 13 at 15 thereof and carries the laterally longitudinally slotted sleeve 16. The slots 17 and 18 accommodate the keys 19 and 20 of the plates 21 and the keys 22 and 23 of the plates 24. The plates 21 and 24 2,774,351 Patented Dec. 18, 1956 are each composed of apertured segments 25, and the position of the keys 19, 29, 22 and 23 determines the position 1 of the segments which are alternated and held under pres-- sure of element 26 by the wing nut 27 threadingly engaged on the bolt 14. The upper end 23 of the bolt 14 is threadingly engaged at 29 of the element 12.

As shown in Fig. 2, the anaesthetic gas would enter through element 12 through the plural apertures at 30 into the shell 11 and between the segments 25 down through the apertures as at 31 through the multiple apertures at 32 into the element 13 and thus into the mask 33. The fittings or elements 12 and 13 could be female rather than male as shown if desired, and the assembly could be arranged so that the gas would travel in the reverse direction through the multiple plates 21 and 24. A wafer valve plate is held by the O ring 34 adjacent the multiple apertures at 30 of element 12.

It will be understood that the device is capable of many modifications in structure and design, without departing from the spirit of the invention, Within the scope of the appended claims.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent of the United States, is:

1. A flame arrester for anaesthetic equipment comprising a tubular shell, multi-apertured end couplings thereon, a Wafer valve on the plural apertures of one 7 -coupling element, and a plurality of segmentedalternated ment on the high side of said arrester, and a plurality of. segmented apertured plates laminated and alternated to pass gas in radial directions therethrough.

References Cited in the file of this patent UNITED STATES PATENTS 2,292,568 Kanter Aug. 11, 1942 Conta Nov. 18, 1952 

